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Which of the following is a barrier against pathogens
provided by the skin?
a. high pH
b. mucus
c. tears
d. desiccation
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- Which of the following skin cells alert the immune system to pathogens?a. fibroblastsb. melanocytesc. keratinocytesd. dendritic cellse. tactile cellsAt what stage of wound healing does granulation tissue first form? a. after scar tissue forms along the wound b. before the blood completely clots c. before leukocytes enter the site and clean the wound d. after a blood clot forms and prior to scar tissue formingPigmentation of skin is due to: A. lymphocytes B. monocytes C. leucocytes D. melanocytes
- After a skin injury, the body initiates a wound-healing response. The first step of this response is the formation of a blood clot to stop bleeding. Which of the following would be the next response? a. increased production of melanin by melanocytes b. increased production of connective tissue C. an increase in Pacinian corpuscles around the wound d. an increased activity in the stratum lucidumWhich of the following statements relating to burns is false? a. it is tissue damage caused by extreme heat b. first-degree burns have damage only in the epidermis c. second-degree burns include damage in the upper dermal layer d. third-degree burns exhibit damage in the entire skin thickness e. None of the aboveWhich factors influence the ability of a tissue to heal? a.presence of blisters associated with the third-degree burn b. lack of initial pain associated with the third-degree burn c. presence of significant pain initially with the third-degree burn d. presence of erythema associated with the third-degree burn
- Which of the following signs is not characteristic of inflammation?a. rednessb. painc. coldd. swellingA research study investigates the synthesis of filaggrin-containing granules in skin biopsies from patients of atopic dermatitis. Which of the indicated layers is the site for these granules? Answers A - E AA BB C C D D EE A <-B C -D -EWhich of the following drug clasification is responsible to liquify/break down mucus in order to aid the risk of coughing up thick, tenacious secretions a. Decongestant b. ACE Inhibitor c. Expectorant d. Mucolytics
- As individuals age, the number of collagen fibers that are found in the dermis of the skin decreases. What are the results of decreased collagen fibers in the dermis? Select all that apply. A The skin loses firmness and becomes wrinkled B The skin develops necrosis and slowly begins to die. C The inflammation levels in the skin increase drastically. The wound healing process in the skin is slower.All of the following are signs of inflammation except A. redness В. loss of function C. pain D. feverWhich of the following is not a function of the skin? a. Synthesis of vitamin C b. Retention of water c. Sensation of pain, temperature, and pressure d. Thermoregulation
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